/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package com.pinterest.secor.monitoring;

import com.twitter.ostrich.stats.Stats;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.powermock.api.mockito.PowerMockito;
import org.powermock.core.classloader.annotations.PrepareForTest;
import org.powermock.modules.junit4.PowerMockRunner;

@RunWith(PowerMockRunner.class)
@PrepareForTest({Stats.class})
public class OstrichMetricCollectorTest {
    private OstrichMetricCollector metricCollector = new OstrichMetricCollector();

    @Before
    public void setUp() throws Exception {
        PowerMockito.mockStatic(Stats.class);
    }

    @Test
    public void incrementByOne() throws Exception {
        metricCollector.increment("expectedLabel", "ignored");

        PowerMockito.verifyStatic(Stats.class);
        Stats.incr("expectedLabel");
    }

    @Test
    public void increment() throws Exception {
        metricCollector.increment("expectedLabel", 42, "ignored");

        PowerMockito.verifyStatic(Stats.class);
        Stats.incr("expectedLabel", 42);
    }

    @Test
    public void metric() throws Exception {
        metricCollector.metric("expectedLabel", 42.0, "ignored");

        PowerMockito.verifyStatic(Stats.class);
        Stats.addMetric("expectedLabel", 42);
    }

    @Test
    public void gauge() throws Exception {
        metricCollector.gauge("expectedLabel", 4.2, "ignored");

        PowerMockito.verifyStatic(Stats.class);
        Stats.setGauge("expectedLabel", 4.2);
    }
}
